When $13\mathrm{.}4$g of ammonium chloride dissolves into $2\mathrm{.}00\backslash$times $10\backslash$deg g of water the temperature changes from$20\mathrm{.}0\backslash$deg C to $15\mathrm{.}3\backslash$deg C$.$a$)$ Determine the molar enthalpy of solution of ammonium chlorideWrite a balanced thermochemical equation for the reaction Sketch an enthalpy diagram for this reaction.